During the photostabilisation process, the excited state energy of a light-absorbing species is removed by energy transfer and/or by an electron transfer quenching mechanism.
By thus returning it to its ground state, photostabilisation stabilises the light-absorbing species, which prevents its photodegradation and the generation of reactive oxygen species (ROS). Hallstar has pioneered photostabilisation technology to promote effective sun protection and comprehensive photoageing prevention. Our photostabilisers for UV filters protect photolabile UV filters from decomposition and shield photosensitive UV filters from generating ROS. A paradigm shift from UV filter protection resulted in the development of our revolutionary anti-ageing technology, which is based on stopping photosensitisers in skin from generating any ROS when excited by light.
Sunlight, including ultraviolet radiation, provides the energy necessary to sustain life on Earth. The solar energy reaching the Earth’s surface at sea level consists of non-ionising radiation spanning wavelengths of 290-3000 nm. This non-ionising radiation contains infrared radiation (~ 50%), visible light (~ 40%), and ultraviolet radiation (~ 10%).
Ultraviolet radiation (UVR) is the solar spectrum of wavelengths between 100 and 400 nm, and it is invisible to human eyes. UVR is categorised into UVA (320-400 nm), UVB (290-320 nm), and UVC (100-290 nm), with UVC rays being unable to reach the Earth’s surface.
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